AS NZS 62841.2.4:2015 pdf free
AS NZS 62841.2.4:2015 pdf free.Electric motor-operated hand-held tools,transportable tools and lawn and garden machinery – Safety
Orbital sanders and polishers, random orbit sanders and polishers, and reciprocating sanders and polishers are operated for 24 h at a voltage equal to 1,1 times the highest rated voltage or 1,1 times the upper limit of the rated voltage range, and then for 24 h at a supply voltage equal to 0,9 times the lowest rated voltage or 0,9 times the lower limit of the rated voltage range. The 24 h of operation need not be continuous. If applicable, the tool is adjusted to the maximum attainable speed.
The tools are operated while the platen, fitted with abrasive paper in reverse position or a polishing bonnet as applicable, is resting under the weight of the tool on a steel plate. The abrasive paper should be replaced as required to avoid direct contact between platen and steel plate. These tools are only tested in the upright position where the platen is horizontal.
Moving and dangerous parts other than the abrasive belt and belt rollers of belt sanders shall, as far as is compatible with the use and working of the tool, be so positioned or enclosed to provide adequate protection against personal injury. The requirements for the abrasive belt and belt rollers of belt sanders are specified in 19.1.101,19.1.102 and 19.1.103.
Compliance is checked by the following tests 1 and 2.
1) An test rod with 8 mm diameter, applied parallel to the axis of the roller, shall not be able,to enter the in-feed nip between the roller and the abrasive belt. As the rod is attempted to be inserted into this area, the abrasive belt shall not be displaced in any way that would allow the entry of the rod. See Figure 101.
2) The abrasive belt is removed. A steel ball with 7 mm diameter is placed all along the in-feed gap between the intended belt contact surface of the roller and the belt housing enclosure with the tool turned upside down in the most unfavourable position,see Figure 102. The steel ball shall not move under its own weight into the gap between the roller and the belt housing beyond the line of complete passage as shown in Figure 102.AS NZS 62841.2.4 pdf free download.
